noun 1. a contact lens of rigid plastic or silicon, exerting light pressure on the cornea of the eye, used for correcting various vision problems including astigmatism. noun 1. a rigid plastic lens which floats on the layer of tears in front of the cornea, worn to correct defects of vision Compare gas-permeable lens, soft […]

Disclaimer: Hard at it definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.